<template>
  <el-row class="app-container">
    <left-tree @change="res => (courseId = res)" />
    <right-list :key="courseId" :course-id="courseId" />
  </el-row>
</template>

<script setup name="Chapter">
  import LeftTree from './left.vue'
  import RightList from './right.vue'
  const courseId = ref('')
</script>
